<?php

    /**
     * PHPExcel_Writer_OpenDocument
     * Copyright (c) 2006 - 2015 PHPExcel
     * This library is free software; you can redistribute it and/or
     * modify it under the terms of the GNU Lesser General Public
     * License as published by the Free Software Foundation; either
     * version 2.1 of the License, or (at your option) any later version.
     * This library is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     * Lesser General Public License for more details.
     * You should have received a copy of the GNU Lesser General Public
     * License along with this library; if not, write to the Free Software
     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
     * @category   PHPExcel
     * @package    PHPExcel_Writer_OpenDocument
     * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
     * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
     * @version    ##VERSION##, ##DATE##
     */
    class PHPExcel_Writer_OpenDocument extends PHPExcel_Writer_Abstract implements PHPExcel_Writer_IWriter {
        /**
         * Private writer parts
         * @var PHPExcel_Writer_OpenDocument_WriterPart[]
         */
        private $writerParts = [];
        /**
         * Private PHPExcel
         * @var PHPExcel
         */
        private $spreadSheet;

        /**
         * Create a new PHPExcel_Writer_OpenDocument
         * @param PHPExcel $pPHPExcel
         */
        public function __construct(PHPExcel $pPHPExcel = null) {
            $this->setPHPExcel($pPHPExcel);
            $writerPartsArray = [
                'content'    => 'PHPExcel_Writer_OpenDocument_Content',
                'meta'       => 'PHPExcel_Writer_OpenDocument_Meta',
                'meta_inf'   => 'PHPExcel_Writer_OpenDocument_MetaInf',
                'mimetype'   => 'PHPExcel_Writer_OpenDocument_Mimetype',
                'settings'   => 'PHPExcel_Writer_OpenDocument_Settings',
                'styles'     => 'PHPExcel_Writer_OpenDocument_Styles',
                'thumbnails' => 'PHPExcel_Writer_OpenDocument_Thumbnails'
            ];
            foreach ($writerPartsArray as $writer => $class) {
                $this->writerParts[$writer] = new $class($this);
            }
        }

        /**
         * Set PHPExcel object
         * @param  PHPExcel $pPHPExcel PHPExcel object
         * @throws PHPExcel_Writer_Exception
         * @return PHPExcel_Writer_Excel2007
         */
        public function setPHPExcel(PHPExcel $pPHPExcel = null) {
            $this->spreadSheet = $pPHPExcel;
            return $this;
        }

        /**
         * Save PHPExcel to file
         * @param  string $pFilename
         * @throws PHPExcel_Writer_Exception
         */
        public function save($pFilename = null) {
            if (!$this->spreadSheet) {
                throw new PHPExcel_Writer_Exception('PHPExcel object unassigned.');
            }
            // garbage collect
            $this->spreadSheet->garbageCollect();
            // If $pFilename is php://output or php://stdout, make it a temporary file...
            $originalFilename = $pFilename;
            if (strtolower($pFilename) == 'php://output' || strtolower($pFilename) == 'php://stdout') {
                $pFilename = @tempnam(PHPExcel_Shared_File::sys_get_temp_dir(), 'phpxltmp');
                if ($pFilename == '') {
                    $pFilename = $originalFilename;
                }
            }
            $objZip = $this->createZip($pFilename);
            $objZip->addFromString('META-INF/manifest.xml', $this->getWriterPart('meta_inf')->writeManifest());
            $objZip->addFromString('Thumbnails/thumbnail.png', $this->getWriterPart('thumbnails')->writeThumbnail());
            $objZip->addFromString('content.xml', $this->getWriterPart('content')->write());
            $objZip->addFromString('meta.xml', $this->getWriterPart('meta')->write());
            $objZip->addFromString('mimetype', $this->getWriterPart('mimetype')->write());
            $objZip->addFromString('settings.xml', $this->getWriterPart('settings')->write());
            $objZip->addFromString('styles.xml', $this->getWriterPart('styles')->write());
            // Close file
            if ($objZip->close() === false) {
                throw new PHPExcel_Writer_Exception("Could not close zip file $pFilename.");
            }
            // If a temporary file was used, copy it to the correct file stream
            if ($originalFilename != $pFilename) {
                if (copy($pFilename, $originalFilename) === false) {
                    throw new PHPExcel_Writer_Exception("Could not copy temporary zip file $pFilename to $originalFilename.");
                }
                @unlink($pFilename);
            }
        }

        /**
         * Create zip object
         * @param string $pFilename
         * @throws PHPExcel_Writer_Exception
         * @return ZipArchive
         */
        private function createZip($pFilename) {
            // Create new ZIP file and open it for writing
            $zipClass = PHPExcel_Settings::getZipClass();
            $objZip   = new $zipClass();
            // Retrieve OVERWRITE and CREATE constants from the instantiated zip class
            // This method of accessing constant values from a dynamic class should work with all appropriate versions of PHP
            $ro           = new ReflectionObject($objZip);
            $zipOverWrite = $ro->getConstant('OVERWRITE');
            $zipCreate    = $ro->getConstant('CREATE');
            if (file_exists($pFilename)) {
                unlink($pFilename);
            }
            // Try opening the ZIP file
            if ($objZip->open($pFilename, $zipOverWrite) !== true) {
                if ($objZip->open($pFilename, $zipCreate) !== true) {
                    throw new PHPExcel_Writer_Exception("Could not open $pFilename for writing.");
                }
            }
            return $objZip;
        }

        /**
         * Get writer part
         * @param  string $pPartName Writer part name
         * @return PHPExcel_Writer_Excel2007_WriterPart
         */
        public function getWriterPart($pPartName = '') {
            if ($pPartName != '' && isset($this->writerParts[strtolower($pPartName)])) {
                return $this->writerParts[strtolower($pPartName)];
            } else {
                return null;
            }
        }

        /**
         * Get PHPExcel object
         * @return PHPExcel
         * @throws PHPExcel_Writer_Exception
         */
        public function getPHPExcel() {
            if ($this->spreadSheet !== null) {
                return $this->spreadSheet;
            } else {
                throw new PHPExcel_Writer_Exception('No PHPExcel assigned.');
            }
        }
    }
